I use postfix. main.cf ; smtpd_sender_restrictions = permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated I 'd like to be special mail accounts that are be allowed to send any mails to everywhere despite reject_sender_login_mismatch. Ofcourse reject_sender_login_mismatch is a very good feature. So I don't want to remove it. How can I do that ? Could you give me an example? Thanks